Do you need a trust, or just a will?

This is the most common estate planning question we hear, and it's usually asked as though the answer is one or the other.

It isn't. Almost everyone needs a will. Whether you also need a trust depends on which problem you're trying to solve.

The short answer. A will directs assets through probate, the public court process that transfers what you owned after you die. A revocable trust passes them outside probate, keeps things private, and handles incapacity, but it does not reduce estate tax. Reducing estate tax requires an irrevocable trust, which means giving up control. Most families with meaningful assets end up with a will and a revocable trust.

What a will actually does.

A will directs how your assets pass, names an executor, and appoints guardians for minor children. That last one matters enormously and a trust doesn't do it.

It works through probate, the court process that validates the will and oversees distribution. Probate is public, takes months and sometimes longer, and costs money that varies significantly by state.

California matters here, because attorney and executor compensation is set by a statutory sliding scale rather than negotiated, and it is calculated on the gross value of the estate rather than the net. A house with a large mortgage is counted at its full value. The California courts publish how the process works, and it is the single biggest reason a funded revocable trust pays for itself here when it might not in a cheaper state.

Everyone with children or assets should have a will. It's the document that names a guardian, and without one a court decides.

What a revocable trust adds.

A revocable living trust holds assets during your life. You control it, you can change it, and you can undo it.

Three things it gives you.

Assets pass outside probate. Faster, cheaper, and private. In states where probate is slow or expensive, this alone justifies it.

It handles incapacity. If you can't manage your affairs, the successor trustee steps in without a court appointing anyone. This is the benefit people appreciate most and think about least.

It stays private. A will becomes a public record. A trust generally doesn't.

What it does not do: reduce your estate tax. Assets in a revocable trust are still yours for tax purposes, because you kept control. Anyone suggesting a revocable trust as a tax strategy has the mechanics wrong.

The three side by side.

Read down the last column and you can see the trade being made: everything an irrevocable trust gains, it gains by giving something up.

When an irrevocable trust is the right tool.

This is where transfer tax planning actually happens, meaning the tax on wealth passing to your heirs.

An irrevocable trust removes assets from your taxable estate. The price is control: you generally can't change it or take the assets back. The IRS sets out which estates are taxable and at what threshold, and that threshold has moved repeatedly, so it is worth confirming rather than assuming. That's not a technicality, it's the whole mechanism. The tax benefit exists because you gave up ownership.

These earn their complexity in specific circumstances: an estate large enough to face that tax, a desire to protect assets from a beneficiary's creditors or divorce, a business or property you want moved out at today's valuation, or a beneficiary who needs distributions managed over time.

They also carry setup and ongoing administration costs, and they need an estate attorney. Below a certain size and complexity, they're solving a problem you don't have.

The step almost everyone skips.

A trust does nothing until it's funded.

Funding means retitling assets into the trust's name. A trust document signed, filed, and never funded is a beautifully drafted piece of paper with no assets in it, and everything still goes through probate.

We find unfunded trusts regularly, sometimes years after signing. It's the single most common failure in estate planning and it takes an afternoon to check.

Beneficiary designations beat both documents.

Worth repeating because it surprises people. Retirement accounts, life insurance, and transfer on death registrations pass by designation, not by will and not by trust.

A form completed at a job you left in 2009 will govern that account, whatever your documents say. Check every designation against what you'd want today. More in what does an estate plan actually need to cover.

What most families with real assets end up with.

Roughly this combination:

• A will, naming an executor and guardians
• A revocable trust, funded, to avoid probate and handle incapacity
• Powers of attorney for financial and healthcare decisions
• Current beneficiary designations on every account
• Irrevocable structures only where there's a specific problem to solve

The first four are close to universal at this level. The fifth is where advice genuinely differs by situation, and where it's worth being skeptical of anyone recommending complexity before understanding your circumstances.

Nothing here sits on its own.

Which structures you use interacts with the rest of the plan. Moving assets into an irrevocable trust gives up the step up in basis your heirs would otherwise get, where the purchase price resets at death so earlier growth is never taxed. The IRS explains how basis is determined for inherited property in Publication 551. Losing that reset can cost more in capital gains than the arrangement saves in estate tax. Retirement accounts follow their own distribution rules regardless of your documents, set out in Publication 590-B. And a charitable component changes which assets should go where, as covered in what's the smartest way to give to charity.

That's why we'd rather look at documents, accounts, and tax treatment together than answer "trust or will" in isolation.

Where to start.

1. Confirm you have a current will, and that it names who you'd want as guardian and executor today.
2. If you have a trust, verify it's actually funded. Check the titles.
3. Check every beneficiary designation.
4. Ask your attorney whether probate in your state is expensive or slow enough to matter, because it varies widely.
5. Only then discuss whether an irrevocable structure solves a problem you actually have.

We don't draft documents. We work alongside your attorney so what they draft fits the rest of your plan, and so nothing in your accounts quietly contradicts it. That coordination is a large part of how we work.

If it's been a few years since anyone read your file, let's talk.

Cosmos Wealth doesn't provide legal or tax advice, and nothing here is a recommendation for your situation. Probate rules, exemption amounts, and the treatment of trusts vary by state and are set by statute. Work with a qualified estate attorney.